rapid-cdn: Stabilize backend haproxy files

haproxy since 2.4 requires correctly ending files, thus do it by adding
in-jinja comment which will result with LF in the end.

software/rapid-cdn/buildout.hash.cfg

@@ -50,7 +50,7 @@ md5sum = 57c86795293b11300a036f5f8cf2c868
 
 [template-backend-haproxy-configuration]
 _update_hash_filename_ = templates/backend-haproxy.cfg.in
-md5sum = 81c73a4995409acb548621e5fb11d481
+md5sum = 5dd9e33a3c69afd60eae8234589512dc
 
 [template-empty]
 _update_hash_filename_ = templates/empty.in

software/rapid-cdn/templates/backend-haproxy.cfg.in

@@ -76,7 +76,7 @@ frontend https-backend
 {%- endfor %}
 {%- for slave_instance in backend_slave_list -%}
 {{ frontend_entry(slave_instance, 'https', True) }}
-{%- endfor %}
+{% endfor %}
 
 {%- for slave_instance in backend_slave_list %}
 {%-   for (scheme, prefix) in SCHEME_PREFIX_MAPPING.items() %}
@@ -191,4 +191,5 @@ backend {{ slave_instance['slave_reference'] }}-{{ scheme }}-failover
 {%-       endif %}
 {%-     endif %}
 {%-   endfor %}
-{%- endfor %}
+{% endfor %}
+{# END OF FILE #}